2. What you will learn…
Problems where you may need to solve for any of
the following:
Amount before a change
Amount after a change
Percent of a 100 after a change
Percent of change
Amount of change
3. Amount before change
Original amount before taxes, tips, discounts, and
changes
Starting amount before taxes, tips, discounts, and
changes
Subtotal amount before taxes, tips, discounts, and
changes
8. Amount after a change
Ending amount after taxes, tips, discounts and changes
Final amount after taxes, tips, discounts and changes
Total amount after taxes, tips, discounts and changes
11. Amount after a change
Subtotal
$9.00
How much total will you leave?
12. Amount after a change
What is the total price after tax?
13. Percent of 100 after a change
Ending percentage of original 100% after taxes, tips,
discounts and changes
Final percentage of original 100% after taxes, tips,
discounts and changes
Total percentage of original 100% after taxes, tips,
discounts and changes
14. Percent of 100 after a change
Original $30.00
Total $25.00
(after discount)
16. Percent of 100 after a change
Subtotal $8.59
Total $12.00
(including tip and 6% sales tax)
17. Percent of 100 after a change
Original $79.99
Total $62.00
(after discount and sales tax)
*Sale was not in FL
18. Percentage of Change
Percent of Tax (increase original 100% starting
percentage)
Percent of Tip (increase original 100% starting
percentage)
Percent of Discount (decrease original 100% starting
percentage)
Percent of Change (increase or decrease original 100%
starting percentage)
21. Percentage of Change
Subtotal $8.59
Total $12.00
(including tip and 6% sales tax)
22. Percentage of Change
Original $79.99
Total $62.00
(after discount and sales tax)
*Sale was not in FL
23. Amount of Change
Amount of Tax (increase original amount)
Amount of Tip (increase original amount)
Amount of Discount (decrease original amount)
Amount of Change (increase or decrease based on
situation)
28. What you learned…
Problems where you may need to solve for any of
the following:
Amount before a change
Amount after a change
Percent of a 100 after a change
Percent of change
Amount of change